MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations including front and rear wall mount, as well as jam nut receptacles, these connectors offer reliable RFI grounding. With 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high-strength aluminum shells, they come in plating options such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, offering versatility in applications. These connectors are known for their durability, with RoHS certified cadmium-free finishes available for environmental compliance. Perfect for military and industrial use, the MIL-DTL-38999 Series I connectors ensure secure and efficient electrical connections in demanding conditions.